Deakin University
Browse
han-utilizingwateractivity-2019.pdf (932.42 kB)

Utilizing water activity as a simple measure to understand hydrophobicity in ionic liquids

Download (932.42 kB)
Version 3 2024-06-18, 13:53
Version 2 2024-06-03, 13:57
Version 1 2019-04-15, 11:08
journal contribution
posted on 2024-06-18, 13:53 authored by Q Han, X Wang, N Bynre
Ionic liquids (ILs) are regarded as designable solvents finding use in a variety of applications. One of the challenges of the design and selection process is to understand the ionic liquid properties. In this work, we selected seven ILs containing three types of hydrophilic anions and examined several key properties, which are correlated to hydrophobicity. In particular, we measured the hydrogen bond basicity β and water activity aw of IL and IL-water mixtures, and suggested that these two properties are linearly correlated particularly in hydrated ILs. We then used NMR to evaluate the chemical shift of H2O in hydrated ILs. Correlating the outcomes of each of these techniques with respect to understanding the hydrophobicity of the ILs is discussed. It is shown that water activity aw is the most facile technique to represent and understand hydrophobicity of ILs.

History

Journal

Frontiers in Chemistry

Volume

7

Article number

ARTN 112

Location

Switzerland

Open access

  • Yes

ISSN

2296-2646

eISSN

2296-2646

Language

English

Publication classification

C1 Refereed article in a scholarly journal, C Journal article

Copyright notice

2019, Han, Wang and Bynre.

Issue

MAR

Publisher

FRONTIERS MEDIA SA